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Comparative Study on the Performance of a Twisted Rudder with Wavy Configuration
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Comparative Study on the Performance of a Twisted Rudder with Wavy Configuration
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Journal Article
Comparative Study on the Performance of a Twisted Rudder with Wavy Configuration
2021
Overview
Byun, T.Y.; Lee, K.W.; Kim, J.W., and Kim, M.C., 2021. Comparative study on the performance of a twisted rudder with wavy configuration. In: Lee, J.L.; Suh, K.-S.; Lee, B.; Shin, S., and Lee, J. (eds.), Crisis and Integrated Management for Coastal and Marine Safety. Journal of Coastal Research, Special Issue No. 114, pp. 569–573. Coconut Creek (Florida), ISSN 0749-0208. Because of recent serious human injuries and marine pollution caused by ship accidents, interest in maneuverability of ships has been increasing. In addition, because the International Maritime Organization (IMO) mandates the adoption of Energy Efficiency Design Index (EEDI), which is a total carbon dioxide regulation system, the demand for eco-friendly ships has increased. The energy saving device in the stern direction based on the propeller is called a post device, and most post devices are based on rudders. Various special rudders have been introduced to reflect this interest in eco-friendliness and steering safety. In this study, to confirm the ship applicability of a twisted rudder with wavy configuration, we reviewed the ship resistance, self-propulsion, and maneuverability. The target ship for analysis and experiment was a KRISO container ship, and the performance of Wavy Twisted Rudder (WTR) was compared and verified with a fishtail rudder, which is an existing special rudder. A Computational Fluid Dynamics (CFD) analysis was conducted using Star CCM+ ver.11.02, and it was computed using the Reynolds-Averaged Navier-Stokes (RANS) equation as the governing equation for turbulent flow analysis around the hull. The verification result revealed that the maneuverability of the proposed rudder was slightly lower than that of the existing special rudders. However, the maneuverability sufficiently satisfied the IMO standards and demonstrated improved results in terms of efficiency.
Publisher
Coastal Education and Research Foundation,Allen Press Publishing,Allen Press Inc
